Using sed to insert text at the beginning of each line

Question

How would one go about using sed in order to insert

rm -rf

at the start of each line of a file?

Solution

sed 's/^/rm -rf /' filename

EDIT

Xargs would be simpler way to delete all of the files listed in another file

xargs -a filename rm -rf

Comments

[mikerobi]

@Dennis Williamson, nice tip, I pretty much only ever call xargs, when I'm piping in output from another program, so I would never have bothered figuring that out.